Robert A. Cannings¹
1 Royal British Columbia Museum, 675 Belleville St, Victoria, BC, V8W 9W2, Canada
Since Corbet’s thorough 1979 overview of Canadian Odonata, hundreds of regional works on taxonomy, faunistics, distribution, life history, ecology and behaviour have been written. Canada records 214 species of Odonata, an increase of 20 since the 1979 assessment. Estimates of unrecorded species are small; this reflects the well-known nature of the fauna. A major impetus for surveys and analyses of the status of species is the work of the Committee on the Status of Endangered Wildlife in Canada which provides a scientifically sound classification of wildlife species potentially at risk. As of 2017, six species have been designated “Endangered” and two “Special Concern” (only five of which are officially listed under the Federal Species at Risk Act (SARA)). The Order provides a good example of molecular bar-coding effort in insects, as many well-accepted morphological species in Canada have been bar-coded to some degree. However, more bar-coding of accurately identified specimens of many species is still required, especially in most of the larger families, which have less than 70% of their species bar-coded. Corbet noted that the larvae of 15 Canadian species were unknown, but almost all larvae are now well, or cursorily, described. Extensive surveys have greatly improved our understanding of species’ geographical distributions, habitat requirements and conservation status but more research is required to better define occurrence, abundance and biological details for almost all species.
barcoding, biodiversity assessment, Biota of Canada, climate change, identification, Odonata, species at risk